Retaining ring for percolator tops



' N. sclURBA 2,523,526

RETAINING RING FOR PERCOLATOR' TOPS Sem. 26, m5@

Filed July 22, 194e PZZYar/zey Patented Sept. 26, 1950 UNITED STATES PATENT OFFICE RETAINING RING FOR PERCOLATOR TOPS Nick Sciurba, Chicago, Ill.

Application July 22, 1946, Serial No. 685,561

4 Claims.

This invention relates to improvements in retaining means for the glass domes of percolator tops, and refers specifically to a retaining means which permits quick and convenient mounting or removal of the dome from the percolator top or cover and yet when in retaining position holds the dome positively upon the cover. y

One of the features of the invention :resides in the provision of a retaining means which can be manufactured land sold inexpensively and which can be simply and conveniently employed with the usual percolator dome.

Other objects and advantages of my invention will be apparent from the accompanying drawing and following detailed description.

Fig. 1 is a sectional elevational view of a percolator top having the dome portion thereof se cured by the retaining means comprising my invention.

Fig. 2 is aplan sectional View taken on line 2-2 of Fig. 1.

Fig. 3 is a1 bottom plan view of the retaining ring comprising my invention.

Fig. 4 isa side elevational view, parts beingV broken away and parts being shown in section, of a modified form of retaining ring.

Fig. 5 is a -bottom plan view of the device illus" trated in Fig. 4.

Fig. 6 is a detailed sectional view taken on line 6-6 of Fig. 5.

Referring in detail to the drawing, I indicates the usual percolator topor cover. The cover I is provided with a central opening defined by an inwardly or downwardly turned flange 2, the flanged opening being adapted to function as a seat for a dome 3 of the'usual construction'. The dome 3 is constructed of glass and is of hollow structure and functions as a knob or handle for the cover I and also serves to distribute the liquid, which is projected upwardly in the form of a jet into contact with the interior of the dome, over the coffee grounds which' are positioned immediately beneath the cover I in the usual percolator. The dome 3, being of transparent material, also permits the operator to observe the percolating action which takes place within the percolator.

The dome 3 is provided with an annular bead 4 of substantially semicircular cross-section. Be-

neath the bead the dome terminates in the form f of a cylinder 5, which portion normally projects a relatively short distance into the interior of the cover I.V

As a feature of my invention I employ an annular ring 6 having an internal diameter sub- 2v stantially equal to the external diameter of the annular bead 4. The upper edge of the ring 6 is flanged inwardly as indicated at 'I in Figs. 1 and S'whereby said ring can be brought to embracing engagement with respect to the bead 4. A plurality of angularly spaced tongues 8 are formed integral with the ring S and project from the lower edge of saidring. The upper portions of the tongues 8 are crimped inwardly, as shown best at 9 in Fig. 1, so that said upper portions embrace the lower sectional contour of the bead 4.

It is to be understood; of course, that as many tongues as desirable may be employed. It is preferable that the tongues be spaced at'substantially equal angles from each other as in the case illustrated wherein the tongues are spaced at 120 from each other. The ring 6 maybe constructed of a metallic material and the tongues `8v may be formed integral therewith. However, if desired, the-ring may be constructed of a plastic material in which metallic tongues similar to the tongues 8 may be imbedded.

With the ring 6 mounted upon' the bead 4 and the upper portions of the tongues 85 crimped inwardly to engage the lower edge of the bead. 4, the tongues 8v will be disposed substantially par.- allel to the surface of the cylindrical portion 5. The dome 3 may then be positioned upon cover I with the cylindrical portion 5 inserted within the flanged opening of the cover. The tongues 8 will then be positioned between the surface of the cylindrical portion 5 and the annular iiange 2. The tongues 8 may then be bent radially so as to engage the lower edge of the flange 2.

When it is desired to remove the dome 3 from the cover I 'for purposes of cleaning or replacement, it is merely necessary to straighten the tongues 8 and remove the dome 3.

Referring particularly to Figs. 4, 5 and 6, a modification of my invention is illustrated. In

Y this form of my invention I contemplate the use of an annular ring I0 which is of substantially semicircular cross-section conforming substantially with the outer contour of bead 4 of the usual percolator dome. The ring I!! is split at one portion of its periphery as indicated at II in Figs. 4 and 5 whereby the ring may be conveniently positioned in engagement with the bead 4. The ring ID is provided with a plurality of depending tongues I2, I3 and I4. The tongues I2 and I3y are spaced at a predetermined angular distance from each other approximately the same angular distance as each tongue is spaced from the tongues I4. One tongue I4 is positioned im- 3 mediately adjacent each end of the ring at the space II.

With the ring I mounted upon the bead 4 the tong-ues I2, I3 and I4 are disposed substanti=ally parallel of the cylindrical portion 5 of the dome 3. The dome may then be positioned upon the cover I and each of the tongues may be bent radially outwardly to lock the ring, and hencethe dome, upon the cover I. It will be noted, however, that when the tongues are inserted with the dome 3 within the opening in the cover I, the ring I0 is drawn into snug engagement with the bead 4. lTherefore7 the tongues I2, I3 and I4 form a dual purpose of securing the ring I0 upon the bead 4 and simultaneously, when said tongues are bent, securing the ring and the dome 3 upon the cover I.

It is obvious that other modifications of my invention may be suggested to those skilled in the art, and hence I do not wish to be limited except as necessitated by the prior art.

I claim as my invention:

1. A retaining device for securing the usual percolator dome of the type having an annular marginal bead adjacent its lower end to a percolator cover having a circular central opening for the reception of said dome, which comprises an annular ring one side of which is adapted to embrace one side of substantially the entire periphery of said bead, tongues of bendable material carried by the opposite side of said ring and extending transversely from said side of the ring, said tongues being adapted to be positioned in said central opening when the dome is mounted upon said cover and bent radially outwardly into locking engagement with the dening edge of said central opening.

2. A retaining device for securing the usual percolator dome of the type having an annular marginal bead adjacent its lower end to a percolator cover having a circular central opening for the reception of said dome, which comprises an annular ring constructed of bendable mate rial one side of which is adapted to embrace one side of said bead, circumferentially spaced tongues formed integral with said ring at the opposite side of said ring and extending trans- Versely from said side of said ring, said tongues being adapted to be positioned in said central opening when the dome is mounted upon the cover and bent radially outwardly into locking engagement with the dening edge of said central opening.

3. A retaining device for securing the usual percolator dome of the type having an annular marginal bead adjacent its lower end to a percolator cover having a circular central opening for the reception of said dome, which comprises a split annular ring of substantially semicircular cross-section adapted to embrace said bead, said ring being constructed of bendable material, tongues formed integral with said ring and extending in parallel relation from one side thereof said tongues being positionable in said central opening when the dome is mounted upon the cover and bendable radially outwardly into locking engagement with the dening edge of said central opening.

4. A retaining device for securing the usual percolator dome of the type having an annular marginal bead adjacent its lower end to a percolator cover having a circular central opening for the reception of said dome, which comprises a split annular ring of substantially semicircular cross-section adapted to embrace said bead, said ring being constructed of bendable material, angularly spaced tongues formed integral with said ring and extending in parallel relation from one side thereof, said tongues being positionable in said central opening when the dome is mounted upon the cover and bendable radially outwardly into locking engagement with the defining edge of said central opening.

NICK SCIURBA.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 304,350 Norton Sept. 2, 1884 1,583,137 Gardella May 4, 1926 

